VMV25L2AR3UNV1 EATON

VMV25L2AR3UNV1 EATON Analog Input Module

Product  Description：

An EATON Analog Input Module is typically a robust, specialized electronic board designed to fit into a system rack or backplane. It contains circuitry for signal conditioning, isolation, and Analog-to-Digital (A/D) conversion. The module receives continuous voltage or current signals from various field instruments (transmitters, thermocouples, RTDs) and translates them into a numerical format readable by the PLC's control program, thereby enabling accurate monitoring and feedback control.

Product Parameters (Typical)

Parameters vary based on the specific EATON PLC family (e.g., Easy, XV, or xControl) and module model.

• Number of Channels: Typically 4, 8, or 16 independent input channels per module.

• Signal Type Compatibility:

  • Voltage: $\pm 10 \text{ V}$, $0-10 \text{ V}$, $1-5 \text{ V}$.

  • Current: $4-20 \text{ mA}$, $0-20 \text{ mA}$.

  • Thermocouple (TC): Types J, K, T, E, N, R, S, B (requires cold-junction compensation).

  • Resistance Temperature Detector (RTD): Pt100, Pt1000, Ni100 (2, 3, or 4-wire connection).

• Resolution: The precision of the A/D conversion, commonly 12-bit, 14-bit, or 16-bit. A higher bit count means greater precision.

• Conversion Time: The speed at which the module converts the analog signal to a digital value, often in the range of $\text{ms}$ per channel.

• Accuracy: The maximum deviation of the measured value from the true value, often expressed as a percentage of full scale ($\text{e.g.}, \pm 0.1\% \text{ of full scale}$).

• Isolation: Electrical isolation between channels, and between the field wiring and the backplane circuitry (e.g., $500 \text{ VDC}$ isolation).

• Filtering: Built-in digital or analog filtering options to suppress signal noise.

• Input Impedance: The resistance seen by the source, which varies for voltage and current inputs.

• Power Consumption: The electrical power required by the module from the system backplane.

Product Advantages

• High Accuracy and Resolution: Provides precise measurement of process variables, crucial for tight control loop performance.

• Versatile Signal Handling: A single module often supports multiple signal types (current, voltage, TC, RTD) or offers specialized modules for specific sensor types, simplifying inventory and system design.

• Robust Noise Immunity: Features like internal filtering, shielding, and galvanic isolation ensure reliable operation in electrically noisy industrial environments.

• Flexible Scaling: Easy configuration within the PLC programming software to scale raw digital values into engineering units (e.g., PSI, ${}^\circ\text{C}$) without complex programming.

• Seamless Integration: Designed to plug directly into EATON's PLC racks and communicate effortlessly over the system backplane, ensuring rapid data exchange.

• Diagnostic Capabilities: Often includes features like open-circuit detection (for current and TC inputs) and over/under-range detection to quickly diagnose field wiring or sensor issues.

Precautions

• Wiring Type: Always use appropriate shielded twisted-pair cables for analog signals and ensure the shielding is properly grounded to minimize electromagnetic interference (EMI).

• Grounding: Proper system and field device grounding practices are essential for signal integrity and personnel safety.

• Signal Type Matching: Ensure the module is configured (via software or jumpers) and wired correctly for the specific sensor type (e.g., current, voltage, 2-wire vs. 4-wire RTD). Mismatch can lead to incorrect readings or damage.

• Common Mode Voltage: Avoid exceeding the specified maximum common mode voltage to prevent damage to the input circuitry.

• Calibration: Regular calibration of both the field sensor and the input module may be necessary to maintain measurement accuracy over time.

• Power Down: Always power down the system before inserting or removing the module from the backplane to prevent damage.

Product Applications

EATON Analog Input Modules are fundamental to any industrial automation system that requires the measurement and control of continuous physical variables.

• Process Control: Measuring temperature, pressure, flow, and level in chemical plants, refineries, food and beverage production, and pharmaceutical facilities.

• HVAC and Building Automation: Monitoring ambient temperature, humidity, and airflow for energy management and environmental control systems.

• Machine Control: Monitoring critical parameters like motor current, hydraulic pressure, and spindle temperature on complex machinery and equipment.

• Energy Management: Measuring electrical current and voltage to calculate power consumption and monitor load distribution.

• Water and Wastewater Treatment: Monitoring $\text{pH}$, chlorine levels, tank levels, and flow rates within treatment processes.

The structure and details of the product：

Our services：

Shipping Port:  China

Payment: Bank of Chicago, Bank of Singapore

Express cooperation: fedex, DHL, UPS and your express account

Service: Professional Sales provides 24 hours /7 days online service

Warranty: one year

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Our main products include DCS control system spare parts, PLC system spare parts, and robot system spare parts. Our advantageous brands include Allen Bradley, Bently Nevada, ABB, HIMA, Reliance, Bender, National Instruments, Emerson Ovation, Honeywell, Siemens, Allen Bradley, ICS Triplex, FOXBORO, Schneider, GE Fanuc, Motorola, HIMA, Prosoft, and other imported industrial components. Our main products serve a wide range of electronic, metallurgical, chemical, and power plants Industries such as steel mills, rubber, cement, machinery and equipment, and construction.